Six more US states report Omicron variant

By Caitlin Webber, Dan Whitcomb and Susan Heavey
Updated December 4 2021 - 1:11am, first published 1:05am
Scientists in the US are still investigating the impact of the highly contagious Omicron variant.

Six more US states have confirmed infections of the Omicron variant of COVID-19 but the Delta strain likely remains a greater threat as winter sets in and Americans gather for the holidays.